MONACOR SPX-21M

Full-range

2″ / 56 mm
Nominal diameter
170 Hz
Resonance
0.47
Q factor
83 dB
Sensitivity
± 1.2 mm
Linear excursion
25 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
83.3
dB
Frequency response
170 - 22000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
170
Hz
Mechanical quality factor
QMS
4.66
Electrical quality factor
QES
0.53
Total quality factor
QTS
0.47

Large signal parameters

Maximum linear excursion
xmax
1.2
mm
Air volume displaced at xmax
VD
1.6
cm³
Power handling
P
12
W
Program power
Pmax
25
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.12
mH
VC Diameter
20
mm
Winding material
Kapton

Magnet

Force factor
Bl
3.32
N/A
Motor constant
Bl/√RE
1.72
N/√W
Diameter
29
mm
Weight
0.026
kg

Diaphragm

Effective diameter
41
mm
Effective area
SD
13
cm²
Moving mass
MMS
1.5
g
Moving mass (without air load)
MMD
1.4
g

Suspensions

Stiffness
KMS
1.67
N/mm
Compliance
CMS
600
µm/N
Equivalent volume to the compliance
VAS
0.14
L
Mechanical resistance
RMS
0.33
N·s/m

Dimensions

Nominal diameter
2
56 x 56
mm
Overall size
56 x 56
mm
Baffle cutout diameter
51
mm
Overall depth
34
mm
Flange thickness
1
mm
Mounting depth
33
mm
Net weight
0.09
kg
MONACOR SPX-21M SPL & Impedance
MONACOR SPX-21M Dimensions

Export this driver to a simulation software:

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